Tools We Will Need on our Journey through the Universe

Quick Review of Scientific Notation

Powers of Ten

Units for Distance, not Time

Forces in the Universe

Strong Force

Weak Force

Electromagnetic Force

Light is Electromagnetic!

The Wave Nature of LightProvides us with Important Probes for Understanding Our Universe

PPT Slide

A Brief Review of ...

Seeing the Light

Looking back through space and time

Falloff and Shift

Light at a Distance

Think About It!

Conclusion

Now Confirm It…Low-Tech

Look!

Keep Looking!

Doppler Shift

What It Looks Like

Doppler Shift / Redshift

Historical Note

What Hubble Found

Hubble’s Law

Implications of Hubble’s Law

Caveat!

The Tools of All Astronomy

Kinds of Spectra

Another Way to Look at a Spectrum

The Atom’s Family

Periodic Table

Gravitational Force

Remember the Tortoise and the Hare?

So, let us deal with GRAVITY

Tycho Brahe

Isaac Newton

Was there really an apple?

Newton’s Laws of Motion

Universal Law of Gravitation

Albert Einstein

Email: laura.whitlock@sonoma.edu

Home Page: http://perry.sonoma.edu/~whitlock